Break RA_DEBUG option into several levels to get better control over
debug output.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@3724 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp b/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
index 6a992b1..7ad7018 100644
--- a/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
+++ b/lib/CodeGen/RegAlloc/LiveRangeInfo.cpp
@@ -1,4 +1,11 @@
+//===-- LiveRangeInfo.cpp -------------------------------------------------===//
+//
+// Live range construction for coloring-based register allocation for LLVM.
+//
+//===----------------------------------------------------------------------===//
+
#include "llvm/CodeGen/LiveRangeInfo.h"
+#include "llvm/CodeGen/RegAllocCommon.h"
#include "llvm/CodeGen/RegClass.h"
#include "llvm/CodeGen/MachineInstr.h"
#include "llvm/CodeGen/MachineCodeForBasicBlock.h"
@@ -6,7 +13,6 @@
#include "llvm/Function.h"
#include "llvm/BasicBlock.h"
#include "Support/SetOperations.h"
-#include "llvm/CodeGen/RegAllocCommon.h"
using std::cerr;
LiveRangeInfo::LiveRangeInfo(const Function *F, const TargetMachine &tm,
@@ -80,8 +86,8 @@
//---------------------------------------------------------------------------
void LiveRangeInfo::constructLiveRanges() {
- if (DEBUG_RA)
- cerr << "Consturcting Live Ranges ...\n";
+ if (DEBUG_RA >= RA_DEBUG_LiveRanges)
+ cerr << "Constructing Live Ranges ...\n";
// first find the live ranges for all incoming args of the function since
// those LRs start from the start of the function
@@ -97,8 +103,8 @@
ArgRange->setRegClass(RegClassList[rcid]);
- if( DEBUG_RA > 1)
- cerr << " adding LiveRange for argument " << RAV(AI) << "\n";
+ if( DEBUG_RA >= RA_DEBUG_LiveRanges)
+ cerr << " Adding LiveRange for argument " << RAV(AI) << "\n";
}
// Now suggest hardware registers for these function args
@@ -133,7 +139,7 @@
// iterate over MI operands to find defs
for (MachineInstr::val_op_iterator OpI = MInst->begin(),
OpE = MInst->end(); OpI != OpE; ++OpI) {
- if(DEBUG_RA) {
+ if(DEBUG_RA >= RA_DEBUG_LiveRanges) {
MachineOperand::MachineOperandType OpTyp =
OpI.getMachineOperand().getOperandType();
@@ -161,7 +167,7 @@
DefRange->insert(Def); // add the instruction (def) to it
LiveRangeMap[ Def ] = DefRange; // update the map
- if (DEBUG_RA > 1)
+ if (DEBUG_RA >= RA_DEBUG_LiveRanges)
cerr << " creating a LR for def: " << RAV(Def) << "\n";
// set the register class of the new live range
@@ -174,7 +180,7 @@
OpI.getMachineOperand().getVRegValue(), isCC );
- if (isCC && DEBUG_RA)
+ if (isCC && DEBUG_RA >= RA_DEBUG_LiveRanges)
cerr << "\a**created a LR for a CC reg:"
<< RAV(OpI.getMachineOperand().getVRegValue());
@@ -185,9 +191,8 @@
// to the merged set
LiveRangeMap[Def] = DefRange;
- if (DEBUG_RA > 1)
- cerr << " added to an existing LR for def: "
- << RAV(Def) << "\n";
+ if (DEBUG_RA >= RA_DEBUG_LiveRanges)
+ cerr << " Added to existing LR for def: " << RAV(Def) << "\n";
}
} // if isDef()
@@ -205,7 +210,7 @@
suggestRegs4CallRets();
- if( DEBUG_RA)
+ if( DEBUG_RA >= RA_DEBUG_LiveRanges)
cerr << "Initial Live Ranges constructed!\n";
}
@@ -260,8 +265,8 @@
//---------------------------------------------------------------------------
void LiveRangeInfo::coalesceLRs()
{
- if(DEBUG_RA)
- cerr << "\nCoalscing LRs ...\n";
+ if(DEBUG_RA >= RA_DEBUG_LiveRanges)
+ cerr << "\nCoalescing LRs ...\n";
for(Function::const_iterator BBI = Meth->begin(), BBE = Meth->end();
BBI != BBE; ++BBI) {
@@ -275,7 +280,7 @@
const MachineInstr * MInst = *MInstIterator;
- if( DEBUG_RA > 1) {
+ if( DEBUG_RA >= RA_DEBUG_LiveRanges) {
cerr << " *Iterating over machine instr ";
MInst->dump();
cerr << "\n";
@@ -296,7 +301,7 @@
LiveRange *LROfUse = getLiveRangeForValue( *UseI );
if (!LROfUse) { // if LR of use is not found
//don't warn about labels
- if (!isa<BasicBlock>(*UseI) && DEBUG_RA)
+ if (!isa<BasicBlock>(*UseI) && DEBUG_RA >= RA_DEBUG_LiveRanges)
cerr << " !! Warning: No LR for use " << RAV(*UseI) << "\n";
continue; // ignore and continue
}
@@ -331,8 +336,8 @@
} // for all machine instructions
} // for all BBs
- if (DEBUG_RA)
- cerr << "\nCoalscing Done!\n";
+ if (DEBUG_RA >= RA_DEBUG_LiveRanges)
+ cerr << "\nCoalescing Done!\n";
}
@@ -347,8 +352,9 @@
cerr << "\nPrinting Live Ranges from Hash Map:\n";
for( ; HMI != LiveRangeMap.end(); ++HMI) {
if (HMI->first && HMI->second) {
- cerr << " " << RAV(HMI->first) << "\t: ";
- printSet(*HMI->second); cerr << "\n";
+ cerr << " Value* " << RAV(HMI->first) << "\t: ";
+ cerr << "LR# " << HMI->second->getUserIGNode()->getIndex();
+ cerr << "\t:Values = "; printSet(*HMI->second); cerr << "\n";
}
}
}